2002 A Doom Odyssey

2002 A Doom Odyssey is a 2002 megawad for The Ultimate Doom which replaces all four episodes. The project was organized by Paul Corfiatis, who designed most of the levels, and also composed the megawad's soundtrack.

A demo version with just the first episode was released on December 20, 2000. Back then, the planned name was 2001 A Doom Odyssey. The megawad itself, properly speaking, was first released on July 24, 2002. A second version was released on August 30, 2002, with changes to E1M3, E1M5, E2M2, E4M2, E4M5 and E4M6, as well as an additional level that can only be reached when the megawad is played in a ZDoom-based source port.

In 2003, it was listed as one of the top 10 WADs of 2002 in the Top 100 WADs of All Time article series during Doomworld's celebration of Doom's 10th birthday. July 30, 2004, a third version was released, with fixes to the megawad's MAPINFO lump, allowing every episode to be completed in ZDoom, as well as various fixes to certain levels. In addition, the entrance maps (E2M5 and E2M4) of episode 2's secret levels (E2M9 and E5M1, respectively) were switched but the exit maps of the secret levels were left unmodified, resulting in gameplay problems. See the glitch with secret levels for more information.

For the tenth anniversary, a new update was released on July 27, 2012, though with a different file name (2002ad10) so as not to replace the previous. It added another new level and reshuffled some existing ones again. A minor bugfix for this tenth anniversary edition was issued on August 2, 2012.

A sequel titled 2022 A Doom Odyssey was released on October 31, 2022.

You have fought your way through that monster infested bloodbath to destroy the spider. Then you return home to find out the awful truth that you're wife "Stephanie" has been kidnapped by Tommy the Trooper. Your mission now leads you back into hell in order to seek and destroy Tommy and rescue you're wife.